1. Subfamily Cloacitrematinae Yamaguti, 1958
   1. Genus Cloacitrema Yamaguti, 1935
   2. Genus Pygorchis Looss, 1899
   3. Genus Neopygorchis Tang & Tang, 1979 accepted as Pygorchis Looss, 1899 (synonym)
2. Subfamily Echinostephillinae Yamaguti, 1958
   1. Genus Echinostephilla Lebour, 1909
   2. Genus Skrjabinovermis Belopolskaya, 1953
3. Subfamily Ommatobrephinae Poche, 1926
   1. Genus Ommatobrephus Nicoll, 1914
   2. Genus Singhiatrema Simha, 1954
4. Genus Paratrema Dronen & Badley, 1979 nec Koehler, 1927
5. Subfamily Parorchiinae Lal, 1936
   1. Genus Parorchis Nicoll, 1907
   2. Genus Pittacium Szidat, 1939
   3. Genus Oswaldotrema Muniz-Pereira & Pinto, 2000 accepted as Pittacium Szidat, 1939 (synonym)
6. Subfamily Philophthalminae Looss, 1899
   1. Genus Philophthalmus Looss, 1899
   2. Genus Ficedularia Xu, 1979 accepted as Philophthalmus Looss, 1899 (unaccepted > junior subjective synonym)
   3. Genus Natterophthalmus Radev, Kanev, Nollen & Sattmann, 1996 accepted as Philophthalmus Looss, 1899
7. Genus Stenomesotrema Dronen & Blend, 2008
8. Genus Ophthalmotrema Sobolev, 1943 accepted as Philophthalmus Looss, 1899 (unaccepted > junior subjective synonym)
9. Genus Proctobium Travassos, 1918 accepted as Parorchis Nicoll, 1907 (Synonym )
10. Subfamily Singhiatrematinae Simha, 1962 accepted as Ommatobrephinae Poche, 1926 (unaccepted > junior subjective synonym)
11. Subfamily Skrjabinovermiinae Yamaguti, 1958 accepted as Echinostephillinae Yamaguti, 1958 (synonym)
12. Genus Zeugorchis Nicoll, 1906 nec Stafford, 1905 accepted as Parorchis Nicoll, 1907 (Pre-occupied)
13. Genus Pseudopsilostoma Yamaguti, 1958 (uncertain > taxon inquirendum)

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